Mission: Impossible is my favourite American tv show. (Perhaps along with The Fugitive and Star Trek.) Just top-notch stuff, and so expensive-looking for its day. And very unusual, with lengthy sequences in most episodes containing no dialogue. I love the format, I think it lends a great sense of structure to the thing. (Fifth season is the weakest as a result, because it departs from the format too often, and ends up seeming just like everything else.) As preposterous as the plots can be, I think the show's style comes from not telegraphing what they're going to do - so we, the audience, see the plot unfolding as it actually happens. The way that it all snaps togther in the best episodes is an absolute wonder to behold - and to see when the villains realize that they've been had, fantastic. The cast playing it dead straight really helps to keep it all grounded too.